That spinny one on TV (InStyler I believe) is $120! I was considering it until I saw the price. Apparently it's not worth it.

Remington are probably the best bet. A GHD is wet expensive and too hot. What hair type is your DD? Straightening does end up ruining your hair, especially thin hair. Remington have a good range and prices are good too. I have an old VS Sasoon that has lasted me pretty well that was only about $50. You can also get hot pink Remingtons...in fact, I'm pretty sure I saw a hot pink straightener and blow drier pack at BigW.